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Bulletin of the American Physical Society

Entanglement of trapped ions using low-frequency magnetic field gradients

S. C. Burd, D. T. C. Allcock, R. Srinivas, D. H. Slichter, A. C. Wilson, Dietrich G. Leibfried, David J. Wineland

Published May 30, 2018• 0 citations
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Abstract We report on a surface-electrode trap with SmCo magnets arranged in a quadrupole configuration underneath the trap electrode. Because the distance between the magnets and the trapped ions can be as little as several hundred micrometers, a large magnetic field is produced without any heat management. The magnetic-field gradient was measured using the Zeeman splitting of a single trapped 40 Ca + ion at several positions, and a field gradient of 36 T m −1 was obtained. Such a field gradient is useful for the generation of a state-dependent force, which is important for quantum simulation and/or quantum gate operation using radio-frequency or microwave radiation.